code: def get_laf_scale(LAF: Tensor) -> Tensor:
      """Return a scale of the LAFs.
  
      Args:
          LAF: :math:`(B, N, 2, 3)`
  
      Returns:
          scale :math:`(B, N, 1, 1)`
  
      Example:
          >>> input = torch.ones(1, 5, 2, 3)  # BxNx2x3
          >>> output = get_laf_scale(input)  # BxNx1x1
      """
      KORNIA_CHECK_LAF(LAF)
      eps = 1e-10
      out = (
          LAF[..., 0:1, 0:1] * LAF[..., 1:2, 1:2]
          - LAF[..., 1:2, 0:1] * LAF[..., 0:1, 1:2]
          + eps
      )
      return out.abs().sqrt()
  
imports: import math
  from typing import List, Optional, Tuple, Union
  import torch
  import torch.nn.functional
  from kornia.core import Tensor, concatenate, cos, sin, stack, tensor, zeros
  from kornia.core.check import KORNIA_CHECK_LAF, KORNIA_CHECK_SHAPE
  from kornia.geometry.conversions import angle_to_rotation_matrix, convert_points_from_homogeneous, rad2deg
  from kornia.geometry.linalg import transform_points
  from kornia.geometry.transform import pyrdown
label_desc: Use image node_id 1 for calling a global function with example usage: get_laf_scale(LAF) and returns: out